A UNIQUENESS THEOREM FOR HELMHOLTZ' EQUATION: PENETRABLE MEDIA WITH AN INFINITE INTERFACEKRISTENSSON G.1980; SIAM J. MATH. ANAL.; ISSN 0036-1410; USA; DA. 1980; VOL. 11; NO 6; PP. 1104-1117; BIBL. 30 REF.Article

NON-ORTHOGONAL SEPARABLE COORDINATE SYSTEMS FOR THE FLAT 4-SPACE HELMHOLTZ EQUATIONKALNINS EG; MILLER W JR.1979; J. PHYS. A; GBR; DA. 1979; VOL. 12; NO 8; PP. 1129-1147; BIBL. 10 REF.Article

AN ADDITION THEOREM FAR VECTOR HELMHOLTZ HARMONICSBORGHESE F; DENTI P; TOSCANO G et al.1980; J. MATH. PHYS. (N.Y.); ISSN 0022-2488; USA; DA. 1980; VOL. 21; NO 12; PP. 2754-2755; BIBL. 11 REF.Article

DETERMINATION D'UNE SOLUTION PARTICULIERE DE L'EQUATION NON UNIFORME D'HELMOLTZGRACH IM.1976; IZVEST. SIBIR. OTDEL. AKAD. NAUK S.S.S.R., TEKH. NAUK; S.S.S.R.; DA. 1976; VOL. 263; NO 8; PP. 134-139Article

JUSTIFICATION OF GEOMETRICAL OPTICS FOR NON-CONVEX OBSTACLESALBER HD.1981; J. MATH. ANAL. & APPL.; ISSN 0022-247X; USA; DA. 1981; VOL. 80; NO 2; PP. 372-386; BIBL. 9 REF.Article

SOME REMARKABLE R-SEPARABLE COORDINATE SYSTEMS FOR THE HELMHOLTZ EQUATIONKALNINS EG; MILLER W JR.1980; LETT. MATH. PHYS.; ISSN 0377-9017; NLD; DA. 1980; VOL. 4; NO 6; PP. 469-474; BIBL. 10 REF.Article

VARIATIONAL PROCEDURES FOR A CLASS OF EXTERIOR INTERFACE PROBLEMSMACCAMY RC.1980; J. MATH. ANAL. & APPL.; ISSN 0022-247X; USA; DA. 1980; VOL. 78; NO 1; PP. 248-266; BIBL. 9 REF.Article

CONDITIONS D'APPLICABILITE DE L'APPROXIMATION DE BORNBAKHRAKH LD; BURDEJNYJ LM; KREMENETSKIJ SD et al.1980; DOKL. AKAD. NAUK SSSR; ISSN 0002-3264; SUN; DA. 1980; VOL. 252; NO 4; PP. 848-851; BIBL. 4 REF.Article

SIXTH-ORDER ACCURATE DIRECT SOLVER FOR THE POISSON AND HELMHOLTZ EQUATIONSROACHE PJ.1979; A.I.A.A. J., NEW YORK; USA; DA. 1979; VOL. 17; NO 5; PP. 524-526; BIBL. 8 REF.Article

PROCESSUS ONDULATOIRES LORS DE LA DIFFRACTION DES ONDES ISSUES D'UNE SOURCE ANNULAIRE DISPOSEE COAXIALEMENT AVEC UN CONE CIRCULAIRE A REFLEXION PARFAITENIKOLAEV BG.1976; ZAP. NAUCH. SEMINAR. L.O.M.I.; S.S.S.R.; DA. 1976; VOL. 62; PP. 168-191; ABS. ANGL.; BIBL. 1 REF.Article

ZUR THEORIE DER ZEITUNABHAENGIGEN MAXWELLSCHEN GLEICHUNGEN FUER FELDER BELIEBIGER DIMENSION UND BELIEBIGEN RANGES = THEORIE DES EQUATIONS DE MAXWELL INDEPENDANTES DU TEMPS POUR DES CHAMPS DE DIMENSION QUELCONQUE ET DE RANGS QUELCONQUEHERMANN P.1978; Z. ANGEW. MATH. MECH.; DDR; DA. 1978; VOL. 58; NO 7; PP. 372-373; BIBL. 8 REF.Article

THE EXPANSION THEORY OF THE DIRICHLET PROBLEM FOR THE HELMHOLTZ EQUATION FOR AN OPEN BOUNDARY.HAYASHI Y.1977; J. MATH. ANAL. APPL.; U.S.A.; DA. 1977; VOL. 61; NO 2; PP. 331-340; BIBL. 5 REF.Article

UNE FORMULATION VARIATIONNELLE PAR EQUATIONS INTEGRALES POUR LA RESOLUTION DE L'EQUATION DE HELMHOLTZ AVEC DES CONDITIONS AUX LIMITES MIXTESMOHAMED ALI HAMDI.1981; C.R. SEANCES ACAD. SCI., SER. 2; ISSN 502677; FRA; DA. 1981; VOL. 292; NO 1; PP. 17-20; ABS. ENG; BIBL. 6 REF.Article

CLASSIFICATION OF THE DEGENERATE ELLIPSOIDAL COORDINATE SYSTEMS WHERE THE SEPARATION OF THE HELMHOLTZ EQUATION IS POSSIBLERONVEAUX A; DECARREAU A.1980; GROUP THEORETICAL METHODS IN PHYSICS. INTERNATIONAL COLLOQUIUM ON GROUP-THEORETICAL METHODS IN PHYSICS. 8/1979/KIRYAT ANAVIM; ISR/GBR; BRISTOL: ADAM HILGER/S.L.: ISRAEL PHYSICAL SOCIETY; DA. 1980; PP. 345-347; BIBL. 2 REF.;[ANNALS OF THE ISRAEL PHYSICAL SOCIETY; ISSN 0309-8710; VOL. 3]Conference Paper

THE SPINOR HELMHOLTZ EQUATION.HILLION P.1978; J. MATH. PHYS.; U.S.A.; DA. 1978; VOL. 19; NO 1; PP. 264-269; BIBL. 7 REF.Article

ON THE NUMERICAL SOLUTION OF HELMHOLTZ'S EQUATION BY THE CAPACITANCE MATRIX METHOD.PROSKUROWSKI W; WIDLUND O.1976; MATH. OF COMPUT.; U.S.A.; DA. 1976; VOL. 30; NO 135; PP. 433-468; BIBL. 2 P.Article

INVARIANT INNER PRODUCTS ON SPACES OF SOLUTIONS OF THE KLEIN-GORDON AND HELMHOLTZ EQUATIONSSTEINBERG S; WOLF KB.1981; J. MATH. PHYS. (N.Y.); ISSN 0022-2488; USA; DA. 1981; VOL. 22; NO 2; PP. 1660-1663; BIBL. 10 REF.Article

THEOREMES D'ADDITION POUR LES FONCTIONS D'ONDE SPHERIQUES ET TENSORIELLESURMAN YU M.1981; Z. TEH. FIZ.; ISSN 0044-4642; SUN; DA. 1981; VOL. 51; NO 3; PP. 457-462; BIBL. 6 REF.Article

INTEGRAZIONE DELLE EQUAZIONI DELLA METEOROLOGIA: TRASFORMAZIONE DELLA OMEGA -EQUATION TRIDIMENSIONALE IN EQUIAZIONI DI HELMOLTZ BIDIMENSIONALI = INTEGRATION DES EQUATIONS DE LA METEOROLOGIE: TRANSFORMATION DE L'EQUATION-OMEGA TRIDIMENSIONNELLE EN EQUATION DE HELMHOLTZ A DEUX DIMENSIONSFINIZIO C; SELVI R.1981; RIV. METEOROL. AERONAUT.; ISSN 0035-6328; ITA; DA. 1981; VOL. 61; NO 3-4; PP. 231-235; ABS. FRE/ENG; BIBL. 5 REF.Article

ITERATIVE METHODS FOR SOLVING THE EXTERIOR DIRICHLET PROBLEM FOR THE HELMHOLTZ EQUATION WITH APPLICATIONS TO THE INVERSE SCATTERING PROBLEM FOR LOW FREQUENCY ACOUSTIC WAVESCOLTON D; KRESS R.1980; J. MATH. ANAL. & APPL.; ISSN 0022-247X; USA; DA. 1980; VOL. 77; NO 1; PP. 60-72; BIBL. 20 REF.Article

AN INTEGRAL OPERATOR CONNECTED WITH THE HELMHOLTZ EQUATIONWOLFE P.1980; J. FUNCTION. ANAL.; USA; DA. 1980; VOL. 36; NO 1; PP. 105-113; BIBL. 5 REF.Article

CAPACITANCE MATRIX METHODS FOR HELMHOLTZ' EQUATION ON GENERAL BOUNDED REGIONS.WIDLUND O.1978; LECTURE NOTES MATH.; GERM.; DA. 1978; NO 631; PP. 209-219; BIBL. 2 P.; (NUMER. TREAT. DIFFER. EQUATIONS. CONF. PROC.; OBERWOLFACH; 1976)Conference Paper

INVERSE SCATTERING FOR AN EXTERIOR DIRICHLET PROBLEMHARIHARAN SI.1982; Q. APPL. MATH.; ISSN 0033-569X; USA; DA. 1982; VOL. 40; NO 3; PP. 273-286; BIBL. 6 REF.Article

POLISFEROIDAL'NYE VOLNOVYE FUNKTSII = FONCTIONS D'ONDE POLYSPHEROIDALESTRUSKOVA NF.1982; JAD. FIZ.; ISSN 0044-0027; SUN; DA. 1982; VOL. 36; NO 3; PP. 790-808; ABS. ENG; BIBL. 34 REF.Article

A NEW APPROXIMATION METHOD FOR THE HELMHOLTZ EQUATION IN AN EXTERIOR DOMAINAZIZ AK; DORR MR; KELLOGG RB et al.1982; SIAM J. NUMER. ANAL.; ISSN 0036-1429; USA; DA. 1982; VOL. 19; NO 5; PP. 899-908; BIBL. 26 REF.Article